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arXiv · 1405.5921

Ignition and formation dynamics of a polariton condensate on a semiconductor microcavity pillar

C. Antón·D. Solnyshkov·G. Tosi·M. D. Martín·Z. Hatzopoulos·G. Deligeorgis·P. G. Savvidis·G. Malpuech·L. Viña
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Abstract

We present an experimental study on the ignition and decay of a polariton optical parametric oscillator (OPO) in a semiconductor microcavity pillar. The combination of a continuous wave laser pump, under quasi-phase matching conditions, and a non-resonant, 2 ps-long pulse probe allows us to obtain the full dynamics of the system. The arrival of the probe induces a blue-shift in the polariton emission, bringing the OPO process into resonance with the pump, which triggers the OPO-process. We time-resolve the polariton OPO signal emission for more than 1 nanosecond in both real and momentum-space. We fully characterize the emission of the OPO signal with spectral tomography techniques. Our interpretations are backed up by theoretical simulations based on the 2D coupled Gross-Pitaevskii equation for excitons and photons.

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C. Antón, D. Solnyshkov, G. Tosi, M. D. Martín, Z. Hatzopoulos, G. Deligeorgis, P. G. Savvidis, G. Malpuech, L. Viña. 2014-10-22. Ignition and formation dynamics of a polariton condensate on a semiconductor microcavity pillar. https://doi.org/10.1103/physrevb.90.155311

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